Reply 40 of 50, by Stiletto
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- l33t++
Could try this but honestly I've never had much luck trying something like this, especially considering the datecodes are bullshit.
http://www.ic2ic.com/search.jsp?sSearchWord=U … 38-3B9&prefix=U
http://www.icbaibai.com/search.jsp?sSearchWor … 38-3B9&prefix=U
uPD65622 series is a CMOS gate array. It's not necessarily considered to be end-user reprogrammable. The "program" defines which areas become memory and which logic. And it's quite possible there's read protection, meaning even if you had a programmer that could program a blank chip, you wouldn't be able to read it out again.
http://www.datasheetarchive.com/dlmain/Datash … /DSA-434048.pdf
If you can find the exact chip with the exact numbers (UPD65622GF-138-3B9) and if it's working you may be able to fix the device, sure. But you may need another Roland SC-88 to scavenge from to do just that.
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Stiletto